Question

I created a sample table on SQLite that has an Id column that is auto increment.

CREATE TABLE "ESVLIntegration" ("Id" INTEGER PRIMARY KEY  AUTOINCREMENT  NOT NULL  UNIQUE , "ProcessId" TEXT NOT NULL , "UserId" INTEGER NOT NULL , "Status" TEXT NOT NULL , "StartDate" DATETIME NOT NULL , "EndDate" DATETIME, "Operation" TEXT NOT NULL , "SNEquip" TEXT NOT NULL , "CardName" TEXT NOT NULL , "FilePath" TEXT NOT NULL , "Processed" BOOL NOT NULL )

But when I try to insert for the second time, I get the following error:

Abort due to constraint violation PRIMARY KEY must be unique

This is my code

public class ESVLIntegration
{
    public long Id { get; set; }
    public String ProcessId { get; set; }
    public long UserId { get; set; }
    public String Status { get; set; }
    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
    public String Operation { get; set; }
    public String SNEquip { get; set; }
    public String CardName { get; set; }
    public String FilePath { get; set; }
    public Boolean Processed { get; set; }
}

public class Sample : Database<Sample>
{
    public Table<ESVLIntegration> ESVLIntegration { get; set; }
}

private void WriteParameters()
{
    "Writing sample parameters to SQLite DB".LogDebug();
    var pars = new ESVLIntegration();
    pars.ProcessId = Guid.NewGuid().ToString();
    pars.CardName = "gpp3";
    pars.StartDate = DateTime.Now;
    pars.Status = "Start";
    pars.Operation = VerifyStatus;
    pars.SNEquip = "12345";
    pars.FilePath = @"C:\Folder\FilePath";
    pars.Processed = false;
    using (var conn = new SQLiteConnection(connStr))
    {
       conn.Open();
       var db = Sample.Init(conn, 2);
       db.ESVLIntegration.Insert(pars);
    }
}

Any ideas on what I’m doing wrong here ?

EDIT

INTEGER columns on SQlite are of type int64(long)

Answer 1

From the SQLite FAQ I found :

With this table, the statement

INSERT INTO t1 VALUES(NULL,123);

is logically equivalent to saying:

INSERT INTO t1 VALUES((SELECT max(a) FROM t1)+1,123);

So I just changed my class Id to be nullable

public class ESVLIntegration
{
    public long? Id { get; set; }
    public String ProcessId { get; set; }
    public long UserId { get; set; }
    public String Status { get; set; }
    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
    public String Operation { get; set; }
    public String SNEquip { get; set; }
    public String CardName { get; set; }
    public String FilePath { get; set; }
    public Boolean Processed { get; set; }
}

Now it works great!